Added google style checks and formatted all code using google style

simpleexample/build.gradle

...leexample/config/checkstyle/eclipse-java-google-style.xml

simpleexample/config/checkstyle/google_checks.xml

...src/main/java/fxutil/doc/AbstractDocumentStorageImpl.java

...eexample/src/main/java/fxutil/doc/FileMenuController.java

...leexample/src/main/java/fxutil/doc/IDocumentImporter.java

...leexample/src/main/java/fxutil/doc/IDocumentListener.java

simpleexample/src/main/java/fxutil/doc/IDocumentLoader.java

simpleexample/src/main/java/fxutil/doc/IDocumentSaver.java

simpleexample/src/main/java/fxutil/doc/IDocumentStorage.java

...le/src/main/java/fxutil/doc/IDocumentStorageListener.java

...e/src/main/java/fxutil/doc/SimpleJsonFileStorageImpl.java

simpleexample/src/main/java/simpleex/core/LatLong.java

simpleexample/src/main/java/simpleex/core/LatLongs.java

...mple/src/main/java/simpleex/json/LatLongDeserializer.java

...xample/src/main/java/simpleex/json/LatLongSerializer.java

...ple/src/main/java/simpleex/json/LatLongsDeserializer.java

...ample/src/main/java/simpleex/json/LatLongsSerializer.java

...le/src/main/java/simpleex/ui/DraggableNodeController.java

simpleexample/src/main/java/simpleex/ui/FxApp.java